100th Day

What is the significance of the 100th day in a plant growth experiment?

• It marks the end of the experiment.

• It is a standard time to measure growth rate.

• It is when plants reach maturity.

• It is when plants are first planted.

On the 100th day of a chemical reaction experiment, the reaction rate is observed to decrease. What could be a possible reason?

• The reactants are completely consumed.

• The temperature has increased.

• The concentration of reactants has increased.

• The reaction has reached equilibrium.

Tags

NGSS.HS-PS1-5

In a physics experiment, a pendulum is observed for 100 days. What is the primary factor affecting its period?

• Length of the pendulum

• Mass of the pendulum

• Amplitude of swing

• Air resistance

What is the importance of the 100th day in a climate study?

• It marks the end of winter.

• It is used to calculate average seasonal temperatures.

• It is the start of a new climate cycle.

• It is when data collection begins.

On the 100th day of a microbiology experiment, bacterial growth is measured. What is a common method for measuring bacterial growth?

• Spectrophotometry

• pH measurement

• Temperature measurement

• Conductivity measurement

In a 100-day study of enzyme activity, what factor is most likely to affect enzyme function?

• pH level

• Color of the enzyme

• Shape of the container

• Volume of the solution

During a 100-day observation of a star, what is the most important data to collect?

• Brightness variations

• Color changes

• Distance from Earth

• Size of the star

Tags

NGSS.HS-PS4-3

What is the significance of the 100th day in a physics experiment involving radioactive decay?

• It is when half-life is measured.

• It is when decay stops.

• It is when the sample is first measured.

• It is when the sample is disposed of.

Tags

NGSS.HS-PS1-8

In a 100-day ecological study, what is a key indicator of ecosystem health?

• Biodiversity

• Soil color

• Water temperature

• Air pressure

Tags

NGSS.HS-LS2-2

NGSS.HS-LS4-5

On the 100th day of a genetics experiment, what is a common method for analyzing DNA?

• Gel electrophoresis

• Mass spectrometry

• Chromatography

• Centrifugation